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Monitoring Static or Dynamic Entries of the IPv6 Neighbor Discovery Cache
Purpose
Display IPv6 Neighbor Discovery cache information static entries, dynamic entries, or both:
- You can use the static keyword to display only static entries
- You can use the dynamic keyword to display only dynamic entries
- You can use the summary keyword to display summary information
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Action
To display both static and dynamic entries from the IPv6 Neighbor Discovery cache:
host1# show ipv6 neighbors Interface IPv6-Address Type Hardware Addr State Age ----------------- ----------------- ------- -------------- ----- ----- FastEthernet4/1 1::1 dynamic 0090.1a40.05e5 reach 3
To display summary information of both static and dynamic entries from the IPv6 Neighbor Discovery cache:
host1# show ipv6 neighbors summary Total IPv6 neighbors: 7 By type: 5 global, 2 link-local, 0 anycast, 0 unknown By state: 5 reachable, 0 incomplete, 2 stale, 0 probe, 0 delay, 0 init IPv6 address conflicts: 0 during DAD resolution, 0 after DAD resolution
Meaning
Table 40 lists the show ipv6 neighbors command output fields.
Table 40: show ipv6 neighbors Output Fields
Field Name | Field Description |
|---|---|
Interface | Neighbor interface |
IPv6-Address | IPv6 address for the interface |
Type | Type of interface (dynamic, static) |
Hardware Addr | Layer 2 address of the interface |
State | State of the interface (delay, incomplete, probe, reachable, stale) |
Age | Amount of time (in seconds) since the router contacted the neighbor |
Total IPv6 neighbors | Total number of IPv6 neighbors |
By type | List by neighbor type (global, link-local, anycast, and unknown) |
By state | List by neighbor state (reachable, incomplete, stale, probe, delay, an init) |
IPv6 address conflicts | Number of conflicts during or after duplicate address detection resolution |
